VueUse实用工具

1.安装

npm i @vueuse/core

2.使用

• useClipboard 剪贴板

<script setup lang="ts">
import { ref } from 'vue'
import { useClipboard, usePermission } from '@vueuse/core'

const input = ref('')

const { text, isSupported, copy } = useClipboard()
const permissionRead = usePermission('clipboard-read')
const permissionWrite = usePermission('clipboard-write')
</script>

<template>
  <div v-if="isSupported">
    <el-input v-model="input" type="text"></el-input>
    <el-button @click="copy(input)">复制</el-button>
  </div>
  <p v-else>
    该浏览器不支持useClipboard剪贴板API
  </p>
</template>

• useFullscreen 全屏

<script setup lang="ts">
import { ref } from 'vue'
import { useFullscreen } from '@vueuse/core'

const el = ref(null)
const { toggle, isFullscreen } = useFullscreen(el)
</script>

<template>
　　<el-button v-if="!isFullscreen" @click="toggle">全屏</el-button><br>
　　<el-button v-if="isFullscreen" @click="toggle">退出全屏</el-button>
  </div>
</template>

• useNow 获取当前时间

<script setup lang="ts">
import { useNow } from '@vueuse/core'

const now = useNow()
</script>

<template>
  <div>Now: {{ now }}</div>
</template>

• useDateFormat 格式化时间

<script setup lang="ts">
import { ref, computed } from 'vue-demi'
import { useNow, useDateFormat } from '@vueuse/core'

const formatted = useDateFormat(useNow(), 'YYYY-MM-DD HH:mm:ss')
</script>

<template>
  <div>{{ formatted }}</div>
</template>

• useBase64

<script setup lang="ts">
import type { Ref } from 'vue'
import { ref } from 'vue'
import { useBase64 } from '@vueuse/core'

const text = ref('')
const file = ref() as Ref<File>
const image = ref() as Ref<HTMLImageElement>

const { base64: textBase64 } = useBase64(text)
const { base64: fileBase64 } = useBase64(file)
const { base64: imageBase64 } = useBase64(image)
const { base64: bufferBase64 } = useBase64(new ArrayBuffer(8))

function onFileInput(e: Event) {
  file.value = (e.target as HTMLInputElement).files![0]
}
</script>

<template>
  <div space-y-4>
    <div grid md:grid-cols-2 gap-2>
      <div>
        <span>Text Input</span>
        <textarea v-model="text" h-40 type="text" placeholder="Type something..." />
      </div>
      <div>
        <span>Base64</span>
        <textarea h-40 :value="textBase64" readonly />
      </div>
    </div>

    <div grid md:grid-cols-2 gap-2>
      <div>
        <span>Buffer Input</span>
        <pre mt-2>new ArrayBuffer(1024)</pre>
      </div>
      <div>
        <span>Base64</span>
        <textarea h-40 :value="bufferBase64" readonly />
      </div>
    </div>

    <div grid md:grid-cols-2 gap-2>
      <div>
        <span>File Input</span>
        <div>
          <input mt-2 type="file" @input="onFileInput">
        </div>
      </div>
      <div>
        <span>Base64</span>
        <textarea h-40 :value="fileBase64" readonly />
      </div>
    </div>

    <div grid md:grid-cols-2 gap-2>
      <div>
        <span>Image Input</span>
        <img
          ref="image"
          w-full h-40 object-cover
          class="rounded mt-2"
          src="https://images.unsplash.com/photo-1494256997604-768d1f608cac?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=200&q=80"
        >
      </div>
      <div>
        <span>Base64</span>
        <textarea h-40 :value="imageBase64" readonly />
      </div>
    </div>
  </div>
</template>

<style scoped>
textarea {
  min-width: 0px !important;
  width: 100%;
}
</style>